Program Files installation files not affcted

[javacookies]

Good day,I'm trying to deploy my VB.NET application. I decide to use installshield. Everything is fine now. I can install the app and run with no error but there's a weird thing's happening. Even I run my app and things like editing my database or copying files to install directory, nothing is changed when I look at the install directory.Database is empty and no files copied. But if I open the application again, all the changes are still there. Even I uninstall and re-install, the changes is still there.What's more weirder is this doesn't happen if I install it in XP. It seems like it's modfying a database somewhere else in my computer